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Finding the Fourth Proportional to 309,029.10, 463,500.45 and 98,688.30

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Solution

The fourth proportional to 309,029.10, 463,500.45 and 98,688.30 is: 148,018.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,029.10 : 463,500.45 = 98,688.30 : x
  2. Step 2: Convert to fraction form
    309,029.10/463,500.45 = 98,688.30/x
  3. Step 3: Cross multiply
    309,029.10x = 463,500.45 × 98,688.30
  4. Step 4: Simplify right side
    309,029.10x = 45,742,071,459.74
  5. Step 5: Solve for x
    x = 45,742,071,459.74/309,029.10
  6. Step 6: Final answer
    x = 148,018.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.